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DE4035292A1 - Contact-free pulse-breathing monitor - uses load cells on seat-couch to pick=up signals with additional cells to eliminate error signals - Google Patents

Contact-free pulse-breathing monitor - uses load cells on seat-couch to pick=up signals with additional cells to eliminate error signals

Info

Publication number
DE4035292A1
DE4035292A1 DE19904035292 DE4035292A DE4035292A1 DE 4035292 A1 DE4035292 A1 DE 4035292A1 DE 19904035292 DE19904035292 DE 19904035292 DE 4035292 A DE4035292 A DE 4035292A DE 4035292 A1 DE4035292 A1 DE 4035292A1
Authority
DE
Germany
Prior art keywords
signals
breathing
detected
pick
couch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19904035292
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German (de)
Inventor
Gerhard Prof Schauf
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19904035292 priority Critical patent/DE4035292A1/en
Publication of DE4035292A1 publication Critical patent/DE4035292A1/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/103Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
    • A61B5/113Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb occurring during breathing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/103Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
    • A61B5/1102Ballistocardiography
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04Arrangements of multiple sensors of the same type
    • A61B2562/046Arrangements of multiple sensors of the same type in a matrix array
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6891Furniture

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Dentistry (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Physiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

One or more high-sensitivity load cells (sO) are used at the support points of a couch or chair to pick up loading changes caused by the patient's breathing and puls, the signal from, the sensor(s) then being filtered and drift-compensated in circuit (VV) so that signals representing the patient's breathing and pulse can be extracted by circuit (A) for display and/or computer processing (BC). By using double load cells (sO/sL) a difference signal can be used to eliminate disturbances from the surroundings. USE/ADVANTAGE - Eliminates body-mounted pick-ups.

Description

Stand der TechnikState of the art

Bisher erfolgt die Puls-/Atemüberwachung mittels direkter Körpersonden.So far, pulse / breath monitoring has been carried out using direct body probes.

Mangel bisheriger LösungenLack of previous solutions

Direkt angebrachte Körpersonden sind in vielfacher Hinsicht nachteilig. Die Elektroden selbst stellen eine deutliche Belastung für den Patienten dar. Die Anbringung und ständige Überwachung der Ableitungen sind arbeitsintensiv. Die Handhabungen am Patienten durch den betreuenden Arzt und das Pflegepersonal werden durch die Installation behindert.Directly attached body tags are disadvantageous in many ways. The electrodes themselves place a significant strain on the patient The attachment and constant monitoring of the leads are labor-intensive. The handling of the patient by the attending doctor and the nursing staff are hindered by the installation.

Zweck der ErfindungPurpose of the invention

Es ist Zweck der Erfindung, Atmung und/oder Puls ohne Einsatz von Körpersonden zu erfassen. Die Einheit soll zum Einsatz in der Klinik, in der Arztpraxis oder in der Privatwohnung geeignet sein. Anwendungsgebiete sind die Überwachung von Säuglingen und Kindern mit Risikoatmung aber auch Erwachsener in Apnoesituationen oder mit Fehlatmung. Ein Einsatz ist auch in Kombination mit Atemtrainingssystemen möglich.It is the purpose of the invention to breathe and / or pulse without using To capture bodies The unit is intended for use in the clinic, in the Doctor's office or in a private home. application areas are monitoring infants and children with risk breathing, however also adults in apnea situations or with poor breathing. A stake is also possible in combination with breathing training systems.

Erzielbarer VorteilAchievable advantage

Für den Brutkasten ergibt sich eine Verbesserung mit Bezug auf die Belastung des Kindes. Der Manipulationsraum wird gegenüber bisherigen Lösungen nicht eingeschränkt. Die Sonden müssen an einem Brutkasten nur einmalig angebracht werden.For the incubator there is an improvement with regard to the Burden on the child. The manipulation space is compared to previous ones Solutions not restricted. The probes must be on an incubator only be attached once.

In der Arztpraxis läßt die berührungslose Pulsüberwachung die Bewertung ohne psychologische Beeinflussung zu, da die Messung ohne vorherige Manipulationen am Patienten durchgeführt wird. In the doctor's office, non-contact pulse monitoring leaves the evaluation without psychological interference too, since the measurement without previous Manipulations are performed on the patient.  

In der Privatwohnung kann nach einmaliger Installation ohne Probleme eine Überwachung von Puls und/oder Atmung durchgeführt werden, wobei die Meßergebnisse zudem als Alarm- oder Feedbacksignal nutzbar sind.In the private apartment, after a single installation, it can be done without any problems a monitoring of pulse and / or breathing can be carried out, whereby the measurement results can also be used as an alarm or feedback signal.

Lösung der AufgabenstellungSolution of the task

Sowohl die Atmung als auch die pulsierende Blutströmung führen zu mit diesen korrelierbaren geringen Kraftstößen bzw. Gewichtsverlagerungen auf die Stützpunkte der Unterlage des Körpers (Liege oder Sitz).Both breathing and pulsating blood flow lead to these correlatable small force shocks or weight shifts on the support points of the body support (couch or seat).

Die Erfindung erschließt eine berührungslose Überwachung auf der Basis dieser Erkenntnis durch Nutzung von Signalen hochempfindlicher Meßaufnehmer für Kraft oder Kraftdifferenz, die an einem oder mehreren Stützpunkten des Meßobjektes angebracht werden. Die Sonden müssen nur einmalig angebracht werden, und bedürfen keiner Neujustage - auch nicht nach einem Patientenwechsel.The invention opens up a non-contact monitoring on the basis this knowledge by using signals from highly sensitive sensors for force or difference in force at one or more bases of the object to be measured. The probes just have to be attached once and do not require any readjustment - not even after changing patients.

Als Aufnehmer kommen besonders piezoelektrische Geber, aber auch Tauchspulen oder ohmsche Dehnungsmeßsensoren in Betracht. - Bereits die Ableitung von einem einzigen Piezogeber s0 (Fig. 1) erlaubt qualifizierte datentechnische Verarbeitung und vielschichtige Aussagen, wie das zugehörige Meßdiagramm (Fig. 10) beweist.Piezoelectric sensors, but also moving coils or ohmic strain sensors are particularly suitable as transducers. - The derivation from a single piezosensor s 0 ( FIG. 1) allows qualified data processing and multilayered statements, as the associated measurement diagram ( FIG. 10) proves.

Nutzbare Stützpunkte sind sowohl Basispunkte an einem Sitz als auch einer Liege, Patienten an einem entsprechenden Patientenstuhl. - Mittels Differenzaufnahme durch s0 und s1 (Fig. 3) können auch größere Störsignale des Umraumes kompensiert werden. Hierzu kann eine automatische Anpassung an unterschiedliche Lastsituationen auf der Basis regelungstechnischer Bewertung vorgenommen werden.Usable bases are both base points on a seat and a couch, patients on a corresponding patient chair. - Larger interference signals from the surrounding area can also be compensated by means of difference recording by s 0 and s 1 ( FIG. 3). For this purpose, an automatic adaptation to different load situations can be carried out on the basis of control engineering evaluation.

Die Anbringung mehrerer Sonden mit entsprechender Signalauswertung erlaubt neben Meßaussagen für die Atemfrequenz und den Puls auch solche über die Atmungstiefe und Atemdynamik, also den zeitlichen Verlauf eines jeden Atemvorganges. - Das Gesamtsystem (Fig. 9) besteht aus den Offset-geregelten Meßaufnehmern mit ggf. Vorverstärkern an den 1 bis 4 Stützpunkten sowie der Ansteuer- und Auswertelektronik, die je nach Ausbaustand Alarmsignale und/oder Anzeigen und/oder Zeitdiagramme verschiedener Zusammenhänge bietet (Fig. 10 bis 12).The attachment of several probes with appropriate signal evaluation allows not only measurements for the respiratory rate and the pulse, but also information about the depth of breathing and breathing dynamics, i.e. the time course of each breathing process. - The overall system ( Fig. 9) consists of the offset-controlled sensors with preamplifiers at the 1 to 4 support points as well as the control and evaluation electronics, which, depending on the configuration, offer alarm signals and / or displays and / or time diagrams of various relationships ( Fig . 10 to 12).

Claims (7)

1. Atem- und/oder Pulsüberwachungsgerät bestehend aus dem/den Meßsensoren (s0 und s1) der nachfolgenden Filter- (VV) und Auswertelektronik (A und BC) (siehe Fig. 9), dadurch gekennzeichnet, daß die Gewichtsverlagerungen und Beschleunigungskräfte, die durch die Herz- und Atemtätigkeit hervorgerufen werden, zur Erfassung von Herz- und Atemaktivität genutzt werden.1. Breathing and / or pulse monitoring device consisting of the / the measuring sensors (s 0 and s 1 ) of the subsequent filter (VV) and evaluation electronics (A and BC) (see Fig. 9), characterized in that the weight shifts and acceleration forces , which are caused by the heart and breathing activity, are used to record heart and breathing activity. 2. Gerät nach 1, dadurch gekennzeichnet, daß 1 oder mehrere Kraftsensoren in der Einbaulage gemäß s0 (Fig. 1 bis 5) angebracht werden, so daß die nachfolgende Filterung und Driftregelung nur den Durchlaß dynamischer Signale eines gezielten Frequenzbandes zuläßt. Die der Grundlast zugehörige Grundspannung wird kompensiert und höherfrequente Störsignale werden unterdrückt.2. Device according to 1, characterized in that 1 or more force sensors are installed in the installation position according to s 0 ( Fig. 1 to 5), so that the subsequent filtering and drift control only allows the passage of dynamic signals of a targeted frequency band. The base voltage associated with the base load is compensated and higher-frequency interference signals are suppressed. 3. Gerät nach 1, dadurch gekennzeichnet, daß ein oder mehrere Doppel-Kraftsensoren in der Einbaulage gemäß s0/s1 (Fig. 3 bis 5) angebracht werden, so daß über die Erfassung des Lastsignals durch s0 hinaus durch s1 Bodenstörungen erfaßt werden, wobei s1 gegen eine angebrachte Bezugsmasse wirkt.3. Device according to 1, characterized in that one or more double force sensors in the installation position according to s 0 / s 1 ( Fig. 3 to 5) are attached so that on the detection of the load signal by s 0 through s 1 ground disturbances can be detected, with s 1 acting against an applied reference mass. 4. Gerät nach 1, dadurch gekennzeichnet, daß die Empfindlichkeit dadurch erhöht werden kann, daß die Grundlast durch Driftregelung (Fig. 9) kompensiert wird und so dynamische Vorgänge erfaßt werden, die Zeitkonstanten bis zu mehreren Sekunden haben.4. Device according to 1, characterized in that the sensitivity can be increased in that the base load is compensated by drift control ( Fig. 9) and so dynamic processes are detected, which have time constants up to several seconds. 5. Gerät nach 1, dadurch gekennzeichnet, daß beim Einsatz des Doppelsensors s0/s1 die Bodenstörungen getrennt erfaßt werden und so über die Verarbeitung von 2. hinaus mittels s1 die von unten wirkenden Störsignale getrennt erfaßt und nach Empfindlichkeitsanpassung zur Kompensation des auf s0 wirkenden Boden-Störsignales genutzt werden kann.5. An apparatus according to 1, characterized in that the use of the double sensor s 0 / s the bottom defects are separately detected 1, and so on the processing of the second addition means of s 1, the detected separately by acting down noise and the sensitivity adjustment to compensate for the on s 0 acting ground interference signal can be used. 6. Gerät nach 1, dadurch gekennzeichnet, daß der Vorverarbeitung VV (Fig. 9) gemäß 4. eine einfache Melde- und/oder Eingriffseinheit (A/Fig. 6 bis 9) folgt, ggf. auch ein Feedbackkanal.6. Device according to 1, characterized in that the preprocessing VV ( Fig. 9) according to 4. a simple reporting and / or intervention unit (A / Fig. 6 to 9) follows, possibly also a feedback channel. 7. Gerät nach 1, dadurch gekennzeichnet, daß der Vorverarbeitung auch eine rechnergestützte Signalaufbereitung (BC/Fig. 6 bis 9) und Signaldarstellung (Fig. 10 bis 12) folgen kann.7. Device according to 1, characterized in that the preprocessing can also follow a computer-assisted signal processing (BC / Fig. 6 to 9) and signal display ( Fig. 10 to 12).
DE19904035292 1990-11-07 1990-11-07 Contact-free pulse-breathing monitor - uses load cells on seat-couch to pick=up signals with additional cells to eliminate error signals Withdrawn DE4035292A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904035292 DE4035292A1 (en) 1990-11-07 1990-11-07 Contact-free pulse-breathing monitor - uses load cells on seat-couch to pick=up signals with additional cells to eliminate error signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904035292 DE4035292A1 (en) 1990-11-07 1990-11-07 Contact-free pulse-breathing monitor - uses load cells on seat-couch to pick=up signals with additional cells to eliminate error signals

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DE4035292A1 true DE4035292A1 (en) 1991-06-13

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DE19904035292 Withdrawn DE4035292A1 (en) 1990-11-07 1990-11-07 Contact-free pulse-breathing monitor - uses load cells on seat-couch to pick=up signals with additional cells to eliminate error signals

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995033403A1 (en) * 1994-06-07 1995-12-14 Gaby Bader Method and apparatus for monitoring and estimating the awakeness of a person
WO1996020639A1 (en) * 1994-12-29 1996-07-11 Bo Von Scheele A device for indication and behaviour medical control of states of stress
WO1999017658A1 (en) * 1997-10-03 1999-04-15 Eth Transfer Method for measuring at least the breathing rate of a living organism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995033403A1 (en) * 1994-06-07 1995-12-14 Gaby Bader Method and apparatus for monitoring and estimating the awakeness of a person
WO1996020639A1 (en) * 1994-12-29 1996-07-11 Bo Von Scheele A device for indication and behaviour medical control of states of stress
WO1999017658A1 (en) * 1997-10-03 1999-04-15 Eth Transfer Method for measuring at least the breathing rate of a living organism

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OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
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